- Harry's relationship with Alyssa is similar to the relationship between Bobby Santiago and Lori Loud from The Loud House, with a few hints of Timmy-Tootie relationship.
- Harry is a huge fan of Maho Mushi, but he's smart enough not to imitate the stunts seen in the anime.
- Harry is in high school at 7th grade, and studies in a different high school from Alyssa's.
- Harry is a member of a wrestling team and is a jock. However, he's a nice jock and defends nerds and weak teens from jerk jocks.
- Harry likes playing football and wearing varsity jackets.
- Harry's voice didn't break until he became 17 years old.
- Due to the fact that Harry plays football and is part of the school's wrestling team, Harry's favorite subject is P.E..
- Harry dislikes F's and D's in school.
- Harry has a gaming handheld that he occasionally plays on, which looks similar to a Sony PSP.
- Harry's favorite video game is Dennis Destructor, a spoof of first-person shooters like Doom, Quake and Duke Nukem 3D.
- Harry's birthday is March 30th, the same day when the first two main episodes of the Fairly OddParents, "The Big Problem!" and "Power Mad!", first aired in 2001.
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